Extractor



March 2l, 1950 T. s. wATsoN EXTRAGTOR Filed Sept. 14, 1945 2 Sheets-Sheet l INVENTOR. l new@ Ucm ATTRNEY March 21, 1950 T, s. wATsoN EXTRACTOR 2 Sheets-Sheet 2 Filed Sept. 14, `1945 INVENTOR.

f) /fma ATTORNEYS.

Patented Mar. 21, 195

EXTRACTOR Thomas S. `Watson, Milwaukee, Wis., assigner to Huebs'ch Manufacturing Company, Milwaukee, Wis., 4a corporation of Wisconsin ApplicationSeptember 14, 1945, Serial No. 616,196

The invention relates to compression extractors and more particularly to that type of extractor in which fluid pressure exerted againstA a ilexible diaphragm compresses the material operated upon between said diaphragm and an apertured portion of an enclosing casing to extract liquid from said material. 1

In extractors of the type above described the iiexible diaphragm is usually provided with a beaded edge which is clamped between the casing and a retainer ring, and in some instances this type of anchorage has given trouble because of the cracking or splitting of the diaphragm at the anchorage point. The object of the present invention is to provide a new and improved form ol' anchorage connection for the diaphragmr with the casing which eliminates. the possibilityy of the cracking or splitting of the diaphragrn'a-t or adjacent to the joint.

A further object of the invention is to vide an arrangement in which the diaphragm anchorage is not a load transmitter for the cover,

2 claims. (o1. ss- 242) but this load is taken independently of said anchorage connection through a separate connection between the cover and the'frame of the machine.

The invention further consists in the severalr features hereinafter set forth andvmore particu-` larly dened by claims at the conclusion hereof. Referring to the drawings:

Fig. 1 is a vertical sectional .view lof an extractor embodying the invention;

Fig. 2 is a horizontal sectional viewtakenon the line 2-2 of Fig. 1; I

Fig. 3 is a detailed vertical sectionalaview taken on the line 3-3 of Fig. 2;

Fig. 4 is a view similar to Fig. 1 showing a modified form of the invention;

Fig. 5 is a detailed vertical sectional view .taken on the line 5 5 of Fig. 4.

Figs. 1 to 3 show the invention incorporated in an extractor of the type shown in my co-pending application Serial No. 558,255, filed October 11, 1944, embodying an apertured extension between the usual top of such. extractors and the cover. The extractor comprises a metal walled container 6 having an annular flange 'I gspaced from its upper rounded edge 8 and an opening 9 in its bottom connected by a pipe Ii) to a valve I I, which controls the inlet-of pressure uidfrom a pipe I2 and the outlet of said uid through a pipe I3, said valve being operated manually through a rotatable shaft I4 and a lever I5 connected thereto. The pipe I2 is connected to a suitable source of pressure uid, such as water, steam, or compressed air.

The container 6 is mounted in a suitable frame I6, which is formed with a cylindrical wall extension I'I and an annular partition I8 to provide an annular drainage space I9 connected to a f 2 drain pipe 20. The extension has hand vhole openingsA I1 therein.

' A bag 2| `of rubber composition or other suit-I able flexible material fits within the container and has a folded or molded edge portion 22-form ing an annular channel or pocket 23 receiving the upper end of the container 6 and abutting at its bottom 24 against the top of the flange 1, the upper end of said channel forming a rounded top edge 25 for the bag. In this form of the invention a tubular metal casing extension =2li pro,-J

vided with drainage openings 21 and flanged base ring portion 28 has the bottom surface 29 there.

of reversely curved to t over the top edge 25 of the bag and provide acurved inner abutting surface 3i) for the bag when it is flexed upwardly during the operation of the extractor. To clamp, the edge portion of the bag to the container and;

to hold the ring portion of'said extension in assembled relation with the container 6, a sectional' clamping ring formed of two or more segmental ring sections 3| withr a channel faced inner side 32 is used. The top flange 33 of the clamping ring abuts the top surface of the outwardly extending flange of the base 28 and the bottom iiange abuts and has an inclined face 34 abutting a similar face on the bottom side of the flange 'I to form a wedging connection therewith which draws the ring portion 28 down into assembled relation with the top edge 25 of the bag when the ring sections 3l are secured together by the clamping bolts 35 which.A extend through thel spaced ears 36 of said sections, these bolts also drawing'the ring section firmly about the edge portion 22 of the bag to form a water-tight con nection between the bag and the container.

' A cover 3l has a slidably interlockable connection with the top ring portion 38 of the extension I'I and includes a rim portion 38, to which the top proper 40 is secured and a foraminouslining 4I spaced from but secured -to a top plate 42 by a series of spacers 43, said lining A`fitting over the top of the extension 26. The spacebetween the plate 42 and the lining communicates with the drainage space I 9. The vtop of the casing extension does not take the weight of the cover, and when the uid pressure is on, the cover may be slightly spaced therefrom. An inwardly extending locking ange 44 is secured to one-half of the to-p ring portion 38, and another inwardly flan-ged semi-cylindrical locking ring 45 is secured to'one-'half of the rimportion 39 of the cover. The flange 44 of the ring 38 is adapted to project over the upper part of onehalf of the cover rim 39 when the cover is closed to hold this rim between it and the top ring 38 and thus prevent upward movement of the right hand halfof the cover. The iiange 46 of the ring 45 is adapted to project under one-half of the top ring 38 when the cover is closed while fixed rails 41 are provided uponi which wheel'sfi) journalled in brackets 49 carried by the cover' are mounted, so that the cover rides4 on the.` rails.` into and out of operative position with the casing.

The operation of the extractor is generally similar.` to that of the' aforementioned application, the only difference being inthe typev of con-- nectioxr. between the bag and. the'- casing, the. conneetion` herein shown being of. improved form.

and. adapted to prolong the liie ofthe bagand.

providingv for a gradual flexing of the bag over the rounded surface 30 when the bag under the. action of iiuid underl pressurel introduced. into the: bottom of the containerY 6; is forced with they material: to be treated between it and the cover upwardlytc squeeze or compress said material between said bag, casing and cover so as: to. force the liquid content of. said materialA out through apertures' in. the extension and cover.

Figs-' 4 and. 5 I have: shown an extractor in: which the extension 26 is omitted and a short top: ring 50 is substituted therefor.. Thisring 5.8: hasK an inwardly extendingn annular groove 5i formed therein providing a. flanged base portion 52: having aY curved bottom surface 53 similar to the surface 29 and providing a curved inner edge. 54A abutting the bag when it isiiexed upwardly during the operation of the extractor.

The sectional clamping ring is identical with the first described construction. and has been similarly numeralled and acts to hold the bag to thev casingand in assembled relation with the ring 50..

A cover 55 has an apertured lining 56 secured thereto spaced relation and extends over the top ofthe ring 50;, said cover having a bracket 51- secured thereto andcarrying a, pulley 58 for a hoist suspension rope 59 that may be used in con.- nection with a swinging derrick shown in my prior U. S. Patent No. 2,336,428, dated December '7, 1943 For holding the cover 55 in operative position and for transmitting the compression thrust from the cover tov the frame IS, said frame has:

an angled extension. S0- provided with. inwardly (Sii upon the bag4 2i. The space 65 between the angled extension 60 and the casing 6 forms an annular drainage space in. which water forced oud through the lining 5 may drain and be carriedoi through the drain pipe 66. The extensionj'S is bolted to a flange 66 on the container 6sofg-that it may be dropped down to provide accessgto the clamping rings 3|.

It'is: to be understood that this invention is I not limited; to any particular form or arrangement"` of partsy except in so far as such limitations areincludedin the claims.

WhatIcl'aim as my invention is:

t.. a compression extractor, the combina- .tionV of a casing having airounded upper edge and a flange. provided with a wedgfing surface below said edge, a iiexible: ba-g extending into said'. :casing and having a roundedI channeled upper edge over'the rounded edge of said. casing` with: a portion extending, downwardly overv the. outer side oi said casing below its upper edge a member having a flanged ring portion with a. lreverselyl curved surface. engageable with the top of the: rounded edge of the bag, a: sectional:

clamping ring engageable with the downwardly extending portion or said. bag and having inwardlyl extending, flanges to; engage the flanged ring portion. of said member and; to wedgingly engage said wedggngA surface or the flange on said casing; and means: securing the sections ofv said; ring together and in' clamping engagement with. theA bag and in. wedging engagementwith said viiange on saidcasi'ng'.

2. In a compression extractor, thev combina-1 tion of a casing having a rounded edge. and a fianged, portion bellow said edge, a exible bag extending intosaid casing and having a rounded channeled. upper edge fitting. over the rounded edge of. the casing with. a portion extendingl downwardly4 over the cuter surface of said casing, a member having a. ring portion provided with a ange and with a curved surface engageable with the top of the edge of the bag, and a separable: clamping ring engageable with the flanges of said casing and said member and with the downwardly extending portion of the bag for clamping said portion in: fluid-tight engagement with and against the outer surface of. said casing and clamping said ring in assembled relation:

, with said casing.

THOMAS S. WATSON.

REFERENCESI CITED The following references are of' record in the v' file of. this patenti UNITED STATES PATENTS Number Name Date 21,049,057- Geldhof et al July 28, 1936 2,064,787 Ducker Dec. l5, 1936 2,693,589/ Geldhof et al Sept. 21, 193? 2,336,428 Watson Dec. '7, 1943v FOREIGN PATENTS f'. Number Country Date 51,719 Norway Nov. '7, 1932 

